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CVE-2026-9516

Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws. To skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its ow
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7829de7eb846ae7fa5892111b1bce44c59cf6776bc85dece10cecd5fd04c1948
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-763","description":"CWE-763 Release of Invalid Pointer or Reference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-755","description":"CWE-755 Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Cpanel-JSON-XS","product":"Cpanel::JSON::XS","programFiles":["XS.xs"],"programRoutines":[{"name":"decode_json"}],"repo":"https://github.com/rurban/Cpanel-JSON-XS","vendor":"RURBAN","versions":[{"lessThan":"4.41","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-763","description":"CWE-763 Release of Invalid Pointer or Reference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-755","description":"CWE-755 Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/03/5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/adp/0/references/0
{"tags":["patch"],"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/dfe1b41a36caba51dc12a2917fe50285d1ffaa7b.patch"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4dcde2a77ad22d6b71690bda9c33b6520dc12f38e5ae098b5956a7777ccf4c1e · sha256:c9ae38406488ea30… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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